-MFH:

 - #45430, windows implementation of crypt is not TS
 - add Blowfish (using implementation from Solar Designer <solar at openwal dot com>) and extended DES support
 - Make crypt features portable:
   - if no crypt_r, php's implemetation is used (all algo and TS), php can't be used with unsafe crypt anymore
   - if one algo is missing, php's implemetation is used
   - Windows always use php's implementation
 - removed old code in windows/

1 files changed, 769 insertions, 0 deletions

diff --git a/ext/standard/crypt_freesec.c b/ext/standard/crypt_freesec.c
new file mode 100644
index 0000000000..bc74d1cb2c
--- /dev/null
+++ b/ext/standard/crypt_freesec.c
@@ -0,0 +1,769 @@
+/*
+  $Id$ 
+*/
+/*
+ * This version is derived from the original implementation of FreeSec
+ * (release 1.1) by David Burren.  I've reviewed the changes made in
+ * OpenBSD (as of 2.7) and modified the original code in a similar way
+ * where applicable.  I've also made it reentrant and did a number of
+ * other changes -- SD.
+ */
+
+/*
+ * FreeSec: libcrypt for NetBSD
+ *
+ * Copyright (c) 1994 David Burren
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the author nor the names of other contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Owl: Owl/packages/glibc/crypt_freesec.c,v 1.4 2005/11/16 13:08:32 solar Exp $
+ *	$Id$
+ *
+ * This is an original implementation of the DES and the crypt(3) interfaces
+ * by David Burren <davidb at werj.com.au>.
+ *
+ * An excellent reference on the underlying algorithm (and related
+ * algorithms) is:
+ *
+ *	B. Schneier, Applied Cryptography: protocols, algorithms,
+ *	and source code in C, John Wiley & Sons, 1994.
+ *
+ * Note that in that book's description of DES the lookups for the initial,
+ * pbox, and final permutations are inverted (this has been brought to the
+ * attention of the author).  A list of errata for this book has been
+ * posted to the sci.crypt newsgroup by the author and is available for FTP.
+ *
+ * ARCHITECTURE ASSUMPTIONS:
+ *	This code used to have some nasty ones, but I believe these have
+ *	been removed by now.  The code isn't very portable and requires a
+ *	32-bit integer type, though -- SD.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+#ifdef TEST
+#include <stdio.h>
+#endif
+
+#include "crypt_freesec.h"
+
+#define _PASSWORD_EFMT1 '_'
+
+static u_char	IP[64] = {
+	58, 50, 42, 34, 26, 18, 10,  2, 60, 52, 44, 36, 28, 20, 12,  4,
+	62, 54, 46, 38, 30, 22, 14,  6, 64, 56, 48, 40, 32, 24, 16,  8,
+	57, 49, 41, 33, 25, 17,  9,  1, 59, 51, 43, 35, 27, 19, 11,  3,
+	61, 53, 45, 37, 29, 21, 13,  5, 63, 55, 47, 39, 31, 23, 15,  7
+};
+
+static u_char	key_perm[56] = {
+	57, 49, 41, 33, 25, 17,  9,  1, 58, 50, 42, 34, 26, 18,
+	10,  2, 59, 51, 43, 35, 27, 19, 11,  3, 60, 52, 44, 36,
+	63, 55, 47, 39, 31, 23, 15,  7, 62, 54, 46, 38, 30, 22,
+	14,  6, 61, 53, 45, 37, 29, 21, 13,  5, 28, 20, 12,  4
+};
+
+static u_char	key_shifts[16] = {
+	1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
+};
+
+static u_char	comp_perm[48] = {
+	14, 17, 11, 24,  1,  5,  3, 28, 15,  6, 21, 10,
+	23, 19, 12,  4, 26,  8, 16,  7, 27, 20, 13,  2,
+	41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48,
+	44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32
+};
+
+/*
+ *	No E box is used, as it's replaced by some ANDs, shifts, and ORs.
+ */
+
+static u_char	sbox[8][64] = {
+	{
+		14,  4, 13,  1,  2, 15, 11,  8,  3, 10,  6, 12,  5,  9,  0,  7,
+		 0, 15,  7,  4, 14,  2, 13,  1, 10,  6, 12, 11,  9,  5,  3,  8,
+		 4,  1, 14,  8, 13,  6,  2, 11, 15, 12,  9,  7,  3, 10,  5,  0,
+		15, 12,  8,  2,  4,  9,  1,  7,  5, 11,  3, 14, 10,  0,  6, 13
+	},
+	{
+		15,  1,  8, 14,  6, 11,  3,  4,  9,  7,  2, 13, 12,  0,  5, 10,
+		 3, 13,  4,  7, 15,  2,  8, 14, 12,  0,  1, 10,  6,  9, 11,  5,
+		 0, 14,  7, 11, 10,  4, 13,  1,  5,  8, 12,  6,  9,  3,  2, 15,
+		13,  8, 10,  1,  3, 15,  4,  2, 11,  6,  7, 12,  0,  5, 14,  9
+	},
+	{
+		10,  0,  9, 14,  6,  3, 15,  5,  1, 13, 12,  7, 11,  4,  2,  8,
+		13,  7,  0,  9,  3,  4,  6, 10,  2,  8,  5, 14, 12, 11, 15,  1,
+		13,  6,  4,  9,  8, 15,  3,  0, 11,  1,  2, 12,  5, 10, 14,  7,
+		 1, 10, 13,  0,  6,  9,  8,  7,  4, 15, 14,  3, 11,  5,  2, 12
+	},
+	{
+		 7, 13, 14,  3,  0,  6,  9, 10,  1,  2,  8,  5, 11, 12,  4, 15,
+		13,  8, 11,  5,  6, 15,  0,  3,  4,  7,  2, 12,  1, 10, 14,  9,
+		10,  6,  9,  0, 12, 11,  7, 13, 15,  1,  3, 14,  5,  2,  8,  4,
+		 3, 15,  0,  6, 10,  1, 13,  8,  9,  4,  5, 11, 12,  7,  2, 14
+	},
+	{
+		 2, 12,  4,  1,  7, 10, 11,  6,  8,  5,  3, 15, 13,  0, 14,  9,
+		14, 11,  2, 12,  4,  7, 13,  1,  5,  0, 15, 10,  3,  9,  8,  6,
+		 4,  2,  1, 11, 10, 13,  7,  8, 15,  9, 12,  5,  6,  3,  0, 14,
+		11,  8, 12,  7,  1, 14,  2, 13,  6, 15,  0,  9, 10,  4,  5,  3
+	},
+	{
+		12,  1, 10, 15,  9,  2,  6,  8,  0, 13,  3,  4, 14,  7,  5, 11,
+		10, 15,  4,  2,  7, 12,  9,  5,  6,  1, 13, 14,  0, 11,  3,  8,
+		 9, 14, 15,  5,  2,  8, 12,  3,  7,  0,  4, 10,  1, 13, 11,  6,
+		 4,  3,  2, 12,  9,  5, 15, 10, 11, 14,  1,  7,  6,  0,  8, 13
+	},
+	{
+		 4, 11,  2, 14, 15,  0,  8, 13,  3, 12,  9,  7,  5, 10,  6,  1,
+		13,  0, 11,  7,  4,  9,  1, 10, 14,  3,  5, 12,  2, 15,  8,  6,
+		 1,  4, 11, 13, 12,  3,  7, 14, 10, 15,  6,  8,  0,  5,  9,  2,
+		 6, 11, 13,  8,  1,  4, 10,  7,  9,  5,  0, 15, 14,  2,  3, 12
+	},
+	{
+		13,  2,  8,  4,  6, 15, 11,  1, 10,  9,  3, 14,  5,  0, 12,  7,
+		 1, 15, 13,  8, 10,  3,  7,  4, 12,  5,  6, 11,  0, 14,  9,  2,
+		 7, 11,  4,  1,  9, 12, 14,  2,  0,  6, 10, 13, 15,  3,  5,  8,
+		 2,  1, 14,  7,  4, 10,  8, 13, 15, 12,  9,  0,  3,  5,  6, 11
+	}
+};
+
+static u_char	pbox[32] = {
+	16,  7, 20, 21, 29, 12, 28, 17,  1, 15, 23, 26,  5, 18, 31, 10,
+	 2,  8, 24, 14, 32, 27,  3,  9, 19, 13, 30,  6, 22, 11,  4, 25
+};
+
+static u_int32_t bits32[32] =
+{
+	0x80000000, 0x40000000, 0x20000000, 0x10000000,
+	0x08000000, 0x04000000, 0x02000000, 0x01000000,
+	0x00800000, 0x00400000, 0x00200000, 0x00100000,
+	0x00080000, 0x00040000, 0x00020000, 0x00010000,
+	0x00008000, 0x00004000, 0x00002000, 0x00001000,
+	0x00000800, 0x00000400, 0x00000200, 0x00000100,
+	0x00000080, 0x00000040, 0x00000020, 0x00000010,
+	0x00000008, 0x00000004, 0x00000002, 0x00000001
+};
+
+static u_char	bits8[8] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
+
+static u_char	ascii64[] =
+	 "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+/*	  0000000000111111111122222222223333333333444444444455555555556666 */
+/*	  0123456789012345678901234567890123456789012345678901234567890123 */
+
+static u_char m_sbox[4][4096];
+static u_int32_t psbox[4][256];
+static u_int32_t ip_maskl[8][256], ip_maskr[8][256];
+static u_int32_t fp_maskl[8][256], fp_maskr[8][256];
+static u_int32_t key_perm_maskl[8][128], key_perm_maskr[8][128];
+static u_int32_t comp_maskl[8][128], comp_maskr[8][128];
+
+__inline int
+ascii_to_bin(char ch)
+{
+	if (ch > 'z')
+		return(0);
+	if (ch >= 'a')
+		return(ch - 'a' + 38);
+	if (ch > 'Z')
+		return(0);
+	if (ch >= 'A')
+		return(ch - 'A' + 12);
+	if (ch > '9')
+		return(0);
+	if (ch >= '.')
+		return(ch - '.');
+	return(0);
+}
+
+void
+_crypt_extended_init(void)
+{
+	int i, j, b, k, inbit, obit;
+	u_int32_t *p, *il, *ir, *fl, *fr;
+	u_int32_t *bits28, *bits24;
+	u_char inv_key_perm[64];
+	u_char u_key_perm[56];
+	u_char inv_comp_perm[56];
+	u_char init_perm[64], final_perm[64];
+	u_char u_sbox[8][64];
+	u_char un_pbox[32];
+
+	bits24 = (bits28 = bits32 + 4) + 4;
+
+	/*
+	 * Invert the S-boxes, reordering the input bits.
+	 */
+	for (i = 0; i < 8; i++)
+		for (j = 0; j < 64; j++) {
+			b = (j & 0x20) | ((j & 1) << 4) | ((j >> 1) & 0xf);
+			u_sbox[i][j] = sbox[i][b];
+		}
+
+	/*
+	 * Convert the inverted S-boxes into 4 arrays of 8 bits.
+	 * Each will handle 12 bits of the S-box input.
+	 */
+	for (b = 0; b < 4; b++)
+		for (i = 0; i < 64; i++)
+			for (j = 0; j < 64; j++)
+				m_sbox[b][(i << 6) | j] =
+					(u_sbox[(b << 1)][i] << 4) |
+					u_sbox[(b << 1) + 1][j];
+
+	/*
+	 * Set up the initial & final permutations into a useful form, and
+	 * initialise the inverted key permutation.
+	 */
+	for (i = 0; i < 64; i++) {
+		init_perm[final_perm[i] = IP[i] - 1] = i;
+		inv_key_perm[i] = 255;
+	}
+
+	/*
+	 * Invert the key permutation and initialise the inverted key
+	 * compression permutation.
+	 */
+	for (i = 0; i < 56; i++) {
+		u_key_perm[i] = key_perm[i] - 1;
+		inv_key_perm[key_perm[i] - 1] = i;
+		inv_comp_perm[i] = 255;
+	}
+
+	/*
+	 * Invert the key compression permutation.
+	 */
+	for (i = 0; i < 48; i++) {
+		inv_comp_perm[comp_perm[i] - 1] = i;
+	}
+
+	/*
+	 * Set up the OR-mask arrays for the initial and final permutations,
+	 * and for the key initial and compression permutations.
+	 */
+	for (k = 0; k < 8; k++) {
+		for (i = 0; i < 256; i++) {
+			*(il = &ip_maskl[k][i]) = 0;
+			*(ir = &ip_maskr[k][i]) = 0;
+			*(fl = &fp_maskl[k][i]) = 0;
+			*(fr = &fp_maskr[k][i]) = 0;
+			for (j = 0; j < 8; j++) {
+				inbit = 8 * k + j;
+				if (i & bits8[j]) {
+					if ((obit = init_perm[inbit]) < 32)
+						*il |= bits32[obit];
+					else
+						*ir |= bits32[obit-32];
+					if ((obit = final_perm[inbit]) < 32)
+						*fl |= bits32[obit];
+					else
+						*fr |= bits32[obit - 32];
+				}
+			}
+		}
+		for (i = 0; i < 128; i++) {
+			*(il = &key_perm_maskl[k][i]) = 0;
+			*(ir = &key_perm_maskr[k][i]) = 0;
+			for (j = 0; j < 7; j++) {
+				inbit = 8 * k + j;
+				if (i & bits8[j + 1]) {
+					if ((obit = inv_key_perm[inbit]) == 255)
+						continue;
+					if (obit < 28)
+						*il |= bits28[obit];
+					else
+						*ir |= bits28[obit - 28];
+				}
+			}
+			*(il = &comp_maskl[k][i]) = 0;
+			*(ir = &comp_maskr[k][i]) = 0;
+			for (j = 0; j < 7; j++) {
+				inbit = 7 * k + j;
+				if (i & bits8[j + 1]) {
+					if ((obit=inv_comp_perm[inbit]) == 255)
+						continue;
+					if (obit < 24)
+						*il |= bits24[obit];
+					else
+						*ir |= bits24[obit - 24];
+				}
+			}
+		}
+	}
+
+	/*
+	 * Invert the P-box permutation, and convert into OR-masks for
+	 * handling the output of the S-box arrays setup above.
+	 */
+	for (i = 0; i < 32; i++)
+		un_pbox[pbox[i] - 1] = i;
+
+	for (b = 0; b < 4; b++)
+		for (i = 0; i < 256; i++) {
+			*(p = &psbox[b][i]) = 0;
+			for (j = 0; j < 8; j++) {
+				if (i & bits8[j])
+					*p |= bits32[un_pbox[8 * b + j]];
+			}
+		}
+}
+
+static void
+des_init_local(struct php_crypt_extended_data *data)
+{
+	data->old_rawkey0 = data->old_rawkey1 = 0;
+	data->saltbits = 0;
+	data->old_salt = 0;
+
+	data->initialized = 1;
+}
+
+static void
+setup_salt(u_int32_t salt, struct php_crypt_extended_data *data)
+{
+	u_int32_t	obit, saltbit, saltbits;
+	int	i;
+
+	if (salt == data->old_salt)
+		return;
+	data->old_salt = salt;
+
+	saltbits = 0;
+	saltbit = 1;
+	obit = 0x800000;
+	for (i = 0; i < 24; i++) {
+		if (salt & saltbit)
+			saltbits |= obit;
+		saltbit <<= 1;
+		obit >>= 1;
+	}
+	data->saltbits = saltbits;
+}
+
+static int
+des_setkey(const char *key, struct php_crypt_extended_data *data)
+{
+	u_int32_t	k0, k1, rawkey0, rawkey1;
+	int	shifts, round;
+
+	rawkey0 =
+		(u_int32_t)(u_char)key[3] |
+		((u_int32_t)(u_char)key[2] << 8) |
+		((u_int32_t)(u_char)key[1] << 16) |
+		((u_int32_t)(u_char)key[0] << 24);
+	rawkey1 =
+		(u_int32_t)(u_char)key[7] |
+		((u_int32_t)(u_char)key[6] << 8) |
+		((u_int32_t)(u_char)key[5] << 16) |
+		((u_int32_t)(u_char)key[4] << 24);
+
+	if ((rawkey0 | rawkey1)
+	    && rawkey0 == data->old_rawkey0
+	    && rawkey1 == data->old_rawkey1) {
+		/*
+		 * Already setup for this key.
+		 * This optimisation fails on a zero key (which is weak and
+		 * has bad parity anyway) in order to simplify the starting
+		 * conditions.
+		 */
+		return(0);
+	}
+	data->old_rawkey0 = rawkey0;
+	data->old_rawkey1 = rawkey1;
+
+	/*
+	 *	Do key permutation and split into two 28-bit subkeys.
+	 */
+	k0 = key_perm_maskl[0][rawkey0 >> 25]
+	   | key_perm_maskl[1][(rawkey0 >> 17) & 0x7f]
+	   | key_perm_maskl[2][(rawkey0 >> 9) & 0x7f]
+	   | key_perm_maskl[3][(rawkey0 >> 1) & 0x7f]
+	   | key_perm_maskl[4][rawkey1 >> 25]
+	   | key_perm_maskl[5][(rawkey1 >> 17) & 0x7f]
+	   | key_perm_maskl[6][(rawkey1 >> 9) & 0x7f]
+	   | key_perm_maskl[7][(rawkey1 >> 1) & 0x7f];
+	k1 = key_perm_maskr[0][rawkey0 >> 25]
+	   | key_perm_maskr[1][(rawkey0 >> 17) & 0x7f]
+	   | key_perm_maskr[2][(rawkey0 >> 9) & 0x7f]
+	   | key_perm_maskr[3][(rawkey0 >> 1) & 0x7f]
+	   | key_perm_maskr[4][rawkey1 >> 25]
+	   | key_perm_maskr[5][(rawkey1 >> 17) & 0x7f]
+	   | key_perm_maskr[6][(rawkey1 >> 9) & 0x7f]
+	   | key_perm_maskr[7][(rawkey1 >> 1) & 0x7f];
+	/*
+	 *	Rotate subkeys and do compression permutation.
+	 */
+	shifts = 0;
+	for (round = 0; round < 16; round++) {
+		u_int32_t	t0, t1;
+
+		shifts += key_shifts[round];
+
+		t0 = (k0 << shifts) | (k0 >> (28 - shifts));
+		t1 = (k1 << shifts) | (k1 >> (28 - shifts));
+
+		data->de_keysl[15 - round] =
+		data->en_keysl[round] = comp_maskl[0][(t0 >> 21) & 0x7f]
+				| comp_maskl[1][(t0 >> 14) & 0x7f]
+				| comp_maskl[2][(t0 >> 7) & 0x7f]
+				| comp_maskl[3][t0 & 0x7f]
+				| comp_maskl[4][(t1 >> 21) & 0x7f]
+				| comp_maskl[5][(t1 >> 14) & 0x7f]
+				| comp_maskl[6][(t1 >> 7) & 0x7f]
+				| comp_maskl[7][t1 & 0x7f];
+
+		data->de_keysr[15 - round] =
+		data->en_keysr[round] = comp_maskr[0][(t0 >> 21) & 0x7f]
+				| comp_maskr[1][(t0 >> 14) & 0x7f]
+				| comp_maskr[2][(t0 >> 7) & 0x7f]
+				| comp_maskr[3][t0 & 0x7f]
+				| comp_maskr[4][(t1 >> 21) & 0x7f]
+				| comp_maskr[5][(t1 >> 14) & 0x7f]
+				| comp_maskr[6][(t1 >> 7) & 0x7f]
+				| comp_maskr[7][t1 & 0x7f];
+	}
+	return(0);
+}
+
+static int
+do_des(u_int32_t l_in, u_int32_t r_in, u_int32_t *l_out, u_int32_t *r_out,
+	int count, struct php_crypt_extended_data *data)
+{
+	/*
+	 *	l_in, r_in, l_out, and r_out are in pseudo-"big-endian" format.
+	 */
+	u_int32_t	l, r, *kl, *kr, *kl1, *kr1;
+	u_int32_t	f, r48l, r48r, saltbits;
+	int	round;
+
+	if (count == 0) {
+		return(1);
+	} else if (count > 0) {
+		/*
+		 * Encrypting
+		 */
+		kl1 = data->en_keysl;
+		kr1 = data->en_keysr;
+	} else {
+		/*
+		 * Decrypting
+		 */
+		count = -count;
+		kl1 = data->de_keysl;
+		kr1 = data->de_keysr;
+	}
+
+	/*
+	 *	Do initial permutation (IP).
+	 */
+	l = ip_maskl[0][l_in >> 24]
+	  | ip_maskl[1][(l_in >> 16) & 0xff]
+	  | ip_maskl[2][(l_in >> 8) & 0xff]
+	  | ip_maskl[3][l_in & 0xff]
+	  | ip_maskl[4][r_in >> 24]
+	  | ip_maskl[5][(r_in >> 16) & 0xff]
+	  | ip_maskl[6][(r_in >> 8) & 0xff]
+	  | ip_maskl[7][r_in & 0xff];
+	r = ip_maskr[0][l_in >> 24]
+	  | ip_maskr[1][(l_in >> 16) & 0xff]
+	  | ip_maskr[2][(l_in >> 8) & 0xff]
+	  | ip_maskr[3][l_in & 0xff]
+	  | ip_maskr[4][r_in >> 24]
+	  | ip_maskr[5][(r_in >> 16) & 0xff]
+	  | ip_maskr[6][(r_in >> 8) & 0xff]
+	  | ip_maskr[7][r_in & 0xff];
+
+	saltbits = data->saltbits;
+	while (count--) {
+		/*
+		 * Do each round.
+		 */
+		kl = kl1;
+		kr = kr1;
+		round = 16;
+		while (round--) {
+			/*
+			 * Expand R to 48 bits (simulate the E-box).
+			 */
+			r48l	= ((r & 0x00000001) << 23)
+				| ((r & 0xf8000000) >> 9)
+				| ((r & 0x1f800000) >> 11)
+				| ((r & 0x01f80000) >> 13)
+				| ((r & 0x001f8000) >> 15);
+
+			r48r	= ((r & 0x0001f800) << 7)
+				| ((r & 0x00001f80) << 5)
+				| ((r & 0x000001f8) << 3)
+				| ((r & 0x0000001f) << 1)
+				| ((r & 0x80000000) >> 31);
+			/*
+			 * Do salting for crypt() and friends, and
+			 * XOR with the permuted key.
+			 */
+			f = (r48l ^ r48r) & saltbits;
+			r48l ^= f ^ *kl++;
+			r48r ^= f ^ *kr++;
+			/*
+			 * Do sbox lookups (which shrink it back to 32 bits)
+			 * and do the pbox permutation at the same time.
+			 */
+			f = psbox[0][m_sbox[0][r48l >> 12]]
+			  | psbox[1][m_sbox[1][r48l & 0xfff]]
+			  | psbox[2][m_sbox[2][r48r >> 12]]
+			  | psbox[3][m_sbox[3][r48r & 0xfff]];
+			/*
+			 * Now that we've permuted things, complete f().
+			 */
+			f ^= l;
+			l = r;
+			r = f;
+		}
+		r = l;
+		l = f;
+	}
+	/*
+	 * Do final permutation (inverse of IP).
+	 */
+	*l_out	= fp_maskl[0][l >> 24]
+		| fp_maskl[1][(l >> 16) & 0xff]
+		| fp_maskl[2][(l >> 8) & 0xff]
+		| fp_maskl[3][l & 0xff]
+		| fp_maskl[4][r >> 24]
+		| fp_maskl[5][(r >> 16) & 0xff]
+		| fp_maskl[6][(r >> 8) & 0xff]
+		| fp_maskl[7][r & 0xff];
+	*r_out	= fp_maskr[0][l >> 24]
+		| fp_maskr[1][(l >> 16) & 0xff]
+		| fp_maskr[2][(l >> 8) & 0xff]
+		| fp_maskr[3][l & 0xff]
+		| fp_maskr[4][r >> 24]
+		| fp_maskr[5][(r >> 16) & 0xff]
+		| fp_maskr[6][(r >> 8) & 0xff]
+		| fp_maskr[7][r & 0xff];
+	return(0);
+}
+
+static int
+des_cipher(const char *in, char *out, u_int32_t salt, int count,
+	struct php_crypt_extended_data *data)
+{
+	u_int32_t	l_out, r_out, rawl, rawr;
+	int	retval;
+
+	setup_salt(salt, data);
+
+	rawl =
+		(u_int32_t)(u_char)in[3] |
+		((u_int32_t)(u_char)in[2] << 8) |
+		((u_int32_t)(u_char)in[1] << 16) |
+		((u_int32_t)(u_char)in[0] << 24);
+	rawr =
+		(u_int32_t)(u_char)in[7] |
+		((u_int32_t)(u_char)in[6] << 8) |
+		((u_int32_t)(u_char)in[5] << 16) |
+		((u_int32_t)(u_char)in[4] << 24);
+
+	retval = do_des(rawl, rawr, &l_out, &r_out, count, data);
+
+	out[0] = l_out >> 24;
+	out[1] = l_out >> 16;
+	out[2] = l_out >> 8;
+	out[3] = l_out;
+	out[4] = r_out >> 24;
+	out[5] = r_out >> 16;
+	out[6] = r_out >> 8;
+	out[7] = r_out;
+
+	return(retval);
+}
+
+char *
+_crypt_extended_r(const char *key, const char *setting,
+	struct php_crypt_extended_data *data)
+{
+	int		i;
+	u_int32_t	count, salt, l, r0, r1, keybuf[2];
+	u_char		*p, *q;
+
+	if (!data->initialized)
+		des_init_local(data);
+
+	/*
+	 * Copy the key, shifting each character up by one bit
+	 * and padding with zeros.
+	 */
+	q = (u_char *) keybuf;
+	while (q - (u_char *) keybuf < sizeof(keybuf)) {
+		if ((*q++ = *key << 1))
+			key++;
+	}
+	if (des_setkey((u_char *) keybuf, data))
+		return(NULL);
+
+	if (*setting == _PASSWORD_EFMT1) {
+		/*
+		 * "new"-style:
+		 *	setting - underscore, 4 bytes of count, 4 bytes of salt
+		 *	key - unlimited characters
+		 */
+		for (i = 1, count = 0; i < 5; i++)
+			count |= ascii_to_bin(setting[i]) << (i - 1) * 6;
+
+		for (i = 5, salt = 0; i < 9; i++)
+			salt |= ascii_to_bin(setting[i]) << (i - 5) * 6;
+
+		while (*key) {
+			/*
+			 * Encrypt the key with itself.
+			 */
+			if (des_cipher((u_char *) keybuf, (u_char *) keybuf,
+			    0, 1, data))
+				return(NULL);
+			/*
+			 * And XOR with the next 8 characters of the key.
+			 */
+			q = (u_char *) keybuf;
+			while (q - (u_char *) keybuf < sizeof(keybuf) && *key)
+				*q++ ^= *key++ << 1;
+
+			if (des_setkey((u_char *) keybuf, data))
+				return(NULL);
+		}
+		strncpy(data->output, setting, 9);
+		/*
+		 * Double check that we weren't given a short setting.
+		 * If we were, the above code will probably have created
+		 * wierd values for count and salt, but we don't really care.
+		 * Just make sure the output string doesn't have an extra
+		 * NUL in it.
+		 */
+		data->output[9] = '\0';
+		p = (u_char *) data->output + strlen(data->output);
+	} else {
+		/*
+		 * "old"-style:
+		 *	setting - 2 bytes of salt
+		 *	key - up to 8 characters
+		 */
+		count = 25;
+
+		salt = (ascii_to_bin(setting[1]) << 6)
+		     |  ascii_to_bin(setting[0]);
+
+		data->output[0] = setting[0];
+		/*
+		 * If the encrypted password that the salt was extracted from
+		 * is only 1 character long, the salt will be corrupted.  We
+		 * need to ensure that the output string doesn't have an extra
+		 * NUL in it!
+		 */
+		data->output[1] = setting[1] ? setting[1] : data->output[0];
+		p = (u_char *) data->output + 2;
+	}
+	setup_salt(salt, data);
+	/*
+	 * Do it.
+	 */
+	if (do_des(0, 0, &r0, &r1, count, data))
+		return(NULL);
+	/*
+	 * Now encode the result...
+	 */
+	l = (r0 >> 8);
+	*p++ = ascii64[(l >> 18) & 0x3f];
+	*p++ = ascii64[(l >> 12) & 0x3f];
+	*p++ = ascii64[(l >> 6) & 0x3f];
+	*p++ = ascii64[l & 0x3f];
+
+	l = (r0 << 16) | ((r1 >> 16) & 0xffff);
+	*p++ = ascii64[(l >> 18) & 0x3f];
+	*p++ = ascii64[(l >> 12) & 0x3f];
+	*p++ = ascii64[(l >> 6) & 0x3f];
+	*p++ = ascii64[l & 0x3f];
+
+	l = r1 << 2;
+	*p++ = ascii64[(l >> 12) & 0x3f];
+	*p++ = ascii64[(l >> 6) & 0x3f];
+	*p++ = ascii64[l & 0x3f];
+	*p = 0;
+
+	return(data->output);
+}
+
+#ifdef TEST
+static char *
+_crypt_extended(const char *key, const char *setting)
+{
+	static int initialized = 0;
+	static struct php_crypt_extended_data data;
+
+	if (!initialized) {
+		_crypt_extended_init();
+		initialized = 1;
+		data.initialized = 0;
+	}
+	return _crypt_extended_r(key, setting, &data);
+}
+
+#define crypt _crypt_extended
+
+static struct {
+	char *hash;
+	char *pw;
+} tests[] = {
+	{"_J9..CCCCXBrJUJV154M", "U*U*U*U*"},
+	{"_J9..CCCCXUhOBTXzaiE", "U*U***U"},
+	{"_J9..CCCC4gQ.mB/PffM", "U*U***U*"},
+	{"_J9..XXXXvlzQGqpPPdk", "*U*U*U*U"},
+	{"_J9..XXXXsqM/YSSP..Y", "*U*U*U*U*"},
+	{"_J9..XXXXVL7qJCnku0I", "*U*U*U*U*U*U*U*U"},
+	{"_J9..XXXXAj8cFbP5scI", "*U*U*U*U*U*U*U*U*"},
+	{"_J9..SDizh.vll5VED9g", "ab1234567"},
+	{"_J9..SDizRjWQ/zePPHc", "cr1234567"},
+	{"_J9..SDizxmRI1GjnQuE", "zxyDPWgydbQjgq"},
+	{"_K9..SaltNrQgIYUAeoY", "726 even"},
+	{"_J9..SDSD5YGyRCr4W4c", ""},
+	{NULL}
+};
+
+int main(void)
+{
+	int i;
+
+	for (i = 0; tests[i].hash; i++)
+	if (strcmp(crypt(tests[i].pw, tests[i].hash), tests[i].hash)) {
+		puts("FAILED");
+		return 1;
+	}
+
+	puts("PASSED");
+
+	return 0;
+}
+#endif